Which statement describes an action that most likely resulted in a chemical reaction?

A liquid was mixed with another liquid, and a precipitate formed.

A pan of water was heated on a stove, and steam was formed.

A liquid was sprayed into the air, and a sweet odor was smelled.

A child blew through a wand filled with soap, and bubbles were produced.

All metals are solid at room temperature except for mercury (Hg). What are other known physical properties of metals? Select TWO correct answers.

Good conductor of heat and electricity

The chemical equation for the process of photosynthesis is shown. Which statement describes how this chemical equation provides evidence for the Law of Conservation of Mass?

The total number of carbon, hydrogen, and oxygen atoms in the reactants and products is the same; the atoms are just rearranged.

The total number of oxygen atoms in the reactants is the same as the number of hydrogen atoms in the products; the atoms are combined.

The total number of carbon, hydrogen, and oxygen atoms is greater in the products than in the reactants; the reactants form new substances.

The total number of carbon, hydrogen, and oxygen atoms is greater in the reactants than in the products; mass decreases in the products.

Two students are asked to present a chemical change in science class. In container A, they place a penny in water. In container B, they place a penny in nitric acid. The results are shown. What container shows a chemical change occurring?

Container B, because a gas is produced

Container A, because a new substance is formed

Container A, because the penny does not dissolve

Container B, because the penny is changing shape

Day 10 - 8.6E

Authored by Katarina Peralez

Science

8th Grade

NGSS covered

Used 6+ times

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MULTIPLE CHOICE QUESTION

30 sec • 12 pts

What does the number ₃ represent in 4NH₃?

Subscript

Superscript

Coefficient

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

30 sec • 12 pts

What does the number 4 represent in 4NH₃?

Subscript

Superscript

Coefficient

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

30 sec • 12 pts

How many Nitrogen (N) atoms are in 4NH₃?

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

30 sec • 12 pts

How many Hydrogen (H) atoms are in 4NH₃?

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

30 sec • 12 pts

In the equation shown, what are the reactant(s)?

N₂+ H₂

NH₃

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

30 sec • 12 pts

In the equation shown, what are the product(s)?

N₂+ H₂

NH₃

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-1

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An equation for a chemical reaction is shown in the picture.
Which statement provides evidence that mass is conserved in the reaction?

Two new substances are formed in the products.

Water is one of the products, but not part of the reactants.

Two hydrogen atoms are in the reactants, and two hydrogen atoms are in the products.

One chlorine atoms pairs with one sodium atom in the products, and one chlorine atom pairs with one hydrogen atom in the products.

Tags

NGSS.MS-PS1-5

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Day 10 - 8.6E

What does the number ₃ represent in 4NH₃?

What does the number 4 represent in 4NH₃?

How many Nitrogen (N) atoms are in 4NH₃?

How many Hydrogen (H) atoms are in 4NH₃?

In the equation shown, what are the reactant(s)?

In the equation shown, what are the product(s)?

An equation for a chemical reaction is shown in the picture.
Which statement provides evidence that mass is conserved in the reaction?

A chemical equation for a chemical reaction between calcium hydroxide, Ca(OH)₂ and sulfuric acid, H₂SO₄ is shown. The masses of some of the reactants and products are given in grams.
How many grams of sulfuric acid were used in the reaction?

Two solutions are mixed and react to produce a solid precipitate, AgCl. The chemical reaction is shown by the equation.
How many grams of NaNO₃, sodium nitrate, is produced?

Match the following

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Day 10 - 8.6E

What does the number 3 represent in 4NH3?

What does the number 4 represent in 4NH3?

How many Nitrogen (N) atoms are in 4NH3?

How many Hydrogen (H) atoms are in 4NH3?

In the equation shown, what are the reactant(s)?

In the equation shown, what are the product(s)?

An equation for a chemical reaction is shown in the picture.Which statement provides evidence that mass is conserved in the reaction?

A chemical equation for a chemical reaction between calcium hydroxide, Ca(OH)2 and sulfuric acid, H2SO4 is shown. The masses of some of the reactants and products are given in grams. How many grams of sulfuric acid were used in the reaction?

Two solutions are mixed and react to produce a solid precipitate, AgCl. The chemical reaction is shown by the equation. How many grams of NaNO3, sodium nitrate, is produced?

Match the following

Access all questions and much more by creating a free account

Similar Resources on Wayground

Popular Resources on Wayground

Discover more resources for Science

What does the number ₃ represent in 4NH₃?

What does the number 4 represent in 4NH₃?

How many Nitrogen (N) atoms are in 4NH₃?

How many Hydrogen (H) atoms are in 4NH₃?

An equation for a chemical reaction is shown in the picture.
Which statement provides evidence that mass is conserved in the reaction?

A chemical equation for a chemical reaction between calcium hydroxide, Ca(OH)₂ and sulfuric acid, H₂SO₄ is shown. The masses of some of the reactants and products are given in grams.
How many grams of sulfuric acid were used in the reaction?

Two solutions are mixed and react to produce a solid precipitate, AgCl. The chemical reaction is shown by the equation.
How many grams of NaNO₃, sodium nitrate, is produced?